Serratitibia marilyn Gordon and Canepari, 2013

Gordon, Robert D., Canepari, Claudio & Hanley, Guy A., 2013, South American Coccinellidae (Coleoptera), Part XII: New name for Cyra Mulsant, review of Brachiacanthini genera, and systematic revision of Cleothera Mulsant, Hinda Mulsant and Serratitibia Gordon and Canepari, new genus, Insecta Mundi 2013 (278), pp. 1-150 : 105-106

86. Serratitibia marilyn Gordon and Canepari , new species

Description. Male holotype. Length 2.4 mm, width 1.8 mm; body oval, convex. Dorsal surface shiny, lacking alutaceous sculpture except pronotum feebly alutaceous, weakly shiny. Color yellow; pronotum with large, black basomedial macula extended 3/4 or more distance to anterior pronotal margin, apex of macula nearly truncate with small, yellow median indentation; elytron black with 5 small yellow spots arranged in rows of 2 each with apical spot, mediolateral spot irregularly rectangular, projected inward, apical spot transversely rectangular, anterior margin deeply emarginate ( Fig. 479 ); venter of head, prosternum, meso–, metaventrites dark brown; abdomen yellowish brown. Head punctures small, separated by diameter or less, each puncture as large as 1–2 eye facets; pronotal punctures as large as head punctures, separated by diameter or less; elytral punctures 2 times as large as on pronotum, separated by diameter of less; metaventral punctures as large as on elytra, separated by about diameter medially, larger laterally. Clypeus weakly emarginate apically, lateral angle abruptly rounded. Eye canthus about 6 eye facets long, slightly angled forward, apically rounded, yellow. Pronotum narrowed from base to apex, basal angle broadly rounded, anterior angle abruptly rounded, lateral margin straight, basal margin without trace of bordering line. Epipleuron narrow, deeply grooved, deeply emarginate for reception of femoral apices. Protibia narrow, straight, outer margin smooth, without trace of flange, sponda slightly extended beyond protibial border ( Fig. 480 ). Carinae on prosternal process widely separated at apex, parallel, joined at basal 1/4 of prosternum, connected to base by short stem. Metaventrite without setal tuft. Basal abdominal ventrite without median setal tuft. Abdomen with faint trace of primary pores; postcoxal line on basal abdominal ventrite angled to posterior ventrite margin, flattened along margin, apex extended forward. Abdominal ventrites 1–4 with short, sparse pubescence, punctures on basal 3 ventrites large medially, separated by diameter or less, becoming smaller and dense laterally, ventrites 3– 5 densely punctured throughout; 5th ventrite depressed medially in apical 1/2, apical border weakly emarginate medially, lateral angle of emargination with small tubercle bearing tuft of dense setae; 6th ventrite narrow, deeply depressed medially, depression glabrous, without median tubercle, apical margin shallowly emarginate, angle on each side of emargination bearing tuft of setae. Apical tergite short, narrow, apex medially emarginate, surface densely, finely punctured. Genitalia with basal lobe as long as paramere, wide, sides weakly convergent, apex obliquely rounded; paramere Unm type, short, wide, widened apically, apex truncate ( Fig. 481, 482 ); sipho robust, strongly curved in basal 2/3, basal capsule with inner arm short, slender, narrowed medially, apex rounded, outer arm 2 times as long as inner arm, slender, with accessory piece, basal border broadly, deeply emarginate ( Fig. 483, 484 ).

Female. Similar to male except head black with median area of frons yellow, humeral spot present. Genitalia with spermathecal capsule weakly bent medially, ramus thickened medially, cornu not enlarged; bursal cap narrow, oval, apical strut slender, feebly widened in apical 3/4 ( Fig. 485 ).

Variation. Length 2.4–2.8 mm, width 2.2 mm.

Type material. Holotype male; ( Brazil), Est. Biol. Boracela, Salesópolis - S.P., Brasil - 13 - 18.IV.1961, Reichardt col. ( DZUP) . Paratypes; 2, Ilha dos Buzios , S. Paulo - Brasil, 16.X-4.XI.963, Exp. Dep. Zool. ( DZUP) .

Remarks. Elytral color pattern, straight protibia without trace of flange, female head black with median yellow spot, and short, wide paramere of male genitalia distinguish S. marilyn from other species of Section III.

Figures

Figures 474–491. 474–478) Serratitibia cheryl. 474) Habitus. 475) Phallobase ventral. 476) Phallobase lateral. 477) Enlarged siphonal apex. 478) Sipho. 479–485) Serratitibia marilyn. 479) Habitus. 480) Protibia. 481) Phallobase ventral. 482) Phallobase lateral. 483) Enlarged siphonal apex. 484) Sipho. 485) Female genitalia. 486–491) Serratitibia rachel. 486) Habitus. 487) Proleg. 488) Phallobase ventral. 489) Enlarged siphonal apex. 490) Sipho. 491) Female genitalia.